Descriptions:--Anti-skip body, scratching resistance,100% BPA Free for heath-safety.--Double walled stainless steel, long time insulation, can keep your beverage hot/cold for more than 12 hours--Portable and fashion design, perfect for carring into your gym bag, car, bicycle and backpack to enjoy your long hikes, trekking, hot yoga class, long load trip, or any other outdoor activities.--Durable construction and re-usability, eco-friendly choice, instead of in plastic which is bad for the environment and leaches into bottles.